Antidandruff hair conditioning composition

ABSTRACT

Disclosed is hair conditioning compositions comprising antidandruff agent wherein the hair conditioning composition is substantially free of the group selected from a chelating agent, methylchloroisothiazolinone, and methylisothiazolinone. The compositions comprise by weight: (a) from about 0.1% to about 15% of a high melting point fatty compound; (b) compounds selected of; (b1a) from about 0.1% to about 10% of an amidoamine having the following general formula: R 1 CONH(CH 2 ) m N(R 2 ) 2  wherein R 1  is a residue of C 11  to C 24  fatty acids, R 2  is a C 1  to C 4  alkyl, and m is an integer from  1  to  4 ; (b1b) an acid selected from the group consisting of 1 glutamic acid, lactic acid, hydrochloric acid, malic acid, acetic acid, fumaric acid, 1 glutamic acid hydrochloride, tartaric acid, and mixtures thereof, at a level such that the mole ratio of amidoamine to acid is from about 1:0.3 to about 1:1; or (b2) the combination of; (b2a) from about 0.1% to about 10% of a cationic conditioning agent; and (b2b) from about 0.1% to about 10% of a low melting point oil having a melting point of less than 25° C.; (c) a safe and effective amount of an antidandruff agent; (e) a preservative system comprising, by weight of the entire composition, from about 0.1% to about 1.0% of benzyl alcohol, from about 0.1% to about 1.0% of phenoxy ethanol, from about 0.05% to about 1.0% of methyl paraben, and from about 0.05% to about 1.0% of mettryl paraben, and from about 0.01% to about 1.0% of propyl paraben; and (f) an aqueous carrier.

TECHNICAL FIELD

The present invention relates to a hair conditioning compositioncontaining an antidandruff agent.

BACKGROUND

A variety of approaches have been developed to condition the hair. Theseapproaches range from post-shampoo application of hair conditioners suchas leave-on and rinse-off products, to hair conditioning shampoos whichattempt to both clean and condition the hair from a single product.

Although some consumers prefer the ease and convenience of a shampoowhich includes conditioners, a substantial proportion of consumersprefer the more conventional conditioner formulations which are appliedto the hair as a separate step from shampooing, usually subsequent toshampooing. Conditioning formulations can be in the form of rinse-offproducts or leave-on products, and can be in the form of an emulsion,cream, gel, spray, and mousse. Such consumers who prefer theconventional conditioner formulations value the relatively higherconditioning effect, or convenience of changing the amount ofconditioning depending on the condition of hair or amount of hair.

Antidandruff hair conditioning compositions are advantageous in that thecomposition is applied to the hair after the shampoo stage, thus,effective deposition on the scalp can be expected. Meanwhile, it isknown that conditioning compositions containing a relatively largeamount of high melting point fatty compounds, such as fatty alcohols,may grow molds under regular usage conditions unless an effectivepreservative system is in place. Chelating agents such as EDTA and itssalts, and the agent known by tradename Kathon CG (mixture ofmethylchloroisothiazolinone and methylisothiazolinone) are effectivepreservative agents which serve this need. It has been found, however,that these specific preservative agents may interact with theantidandruff agent and thus decrease the effectiveness of theantidandruff agent and/or the preservative itself.

Based on the foregoing, there remains a desire to provide antidandruffhair conditioning compositions which provide effective antidandruffefficacy using a preservative system permitted for use in manycountries, while not deteriorating conditioning benefits such as wethair feel, spreadability, and rinsability, as well as providingglossiness, and dry combing.

None of the existing art provides all of the advantages and benefits ofthe present invention.

SUMMARY

The present invention is directed to a hair conditioning composition(hereafter “Hair care composition A”) comprising by weight:

-   (a) from about 0.1% to about 15% of a high melting point fatty    compound;-   (b) from about 0.1% to about 10% of an amidoamine having the    following general formula:    R¹CONH(CH₂)_(m)N(R²)₂-    wherein R¹ is a residue of C₁₁ to C₂₄ fatty acids, R² is a C₁ to C₄    alkyl, and m is an integer from 1 to 4;-   (c) an acid selected from the group consisting of l-glutamic acid,    lactic acid, hydrochloric acid, malic acid, succinic acid, acetic    acid, fumaric acid, l-glutamic acid hydrochloride, tartaric acid,    and mixtures thereof, at a level such that the mole ratio of    amidoamine to acid is from about 1:0.3 to about 1:1;-   (d) a safe and effective amount of an antidandruff agent;-   (e) a preservative system comprising, by weight of the entire    composition, from about 0.1% to about 1.0% of benzyl alcohol, from    about 0.1% to about 1.0% of phenoxy ethanol, from about 0.05% to    about 1.0% of methyl paraben, and from about 0.01% to about 1.0% of    propyl paraben; and-   (f) an aqueous carrier;    wherein the hair conditioning composition is substantially free of    the group selected from a chelating agent,    methylchloroisothiazolinone, and methylisothiazolinone.

The present invention is also directed to a hair conditioningcomposition (hereinafter “Hair care composition B”) comprising byweight:

-   (a) from about 0.1% to about 15% of a high melting point fatty    compound having a melting point of 25° C. or higher;-   (b) from about 0.1% to about 10% of a cationic conditioning agent;-   (c) from about 0.1% to about 10% of a low melting point oil having a    melting point of less than 25° C.;-   (d) a safe and effective amount of an antidandruff agent;-   (e) a preservative system comprising, by weight of the entire    composition, from about 0.1% to about 1.0% of benzyl alcohol, from    about 0.1% to about 1.0% of phenoxy ethanol, from about 0.05% to    about 1.0% of methyl paraben, and from about 0.01% to about 1.0% of    propyl paraben; and-   (f) an aqueous carrier;    wherein the hair conditioning composition is substantially free of    the group selected from a chelating agent,    methylchloroisothiazolinone, and methylisothiazolinone.

These and other features, aspects, and advantages of the presentinvention will become evident to those skilled in the art from a readingof the present disclosure.

DETAILED DESCRIPTION

While the specification concludes with claims particularly pointing anddistinctly claiming the invention, it is believed the present inventionwill be better understood from the following description.

All percentages are by weight of the total composition unless otherwiseindicated. All ratios are weight ratios unless otherwise indicated. Allpercentages, ratios, and levels of ingredients referred to herein arebased on the actual amount of the ingredient, and do not includesolvents, fillers, or other materials with which the ingredient may becombined as commercially available products, unless otherwise indicated.

As used herein, “comprising” means that other steps and otheringredients which do not affect the end result can be added. This termencompasses the terms “consisting of” and “consisting essentially of”.

All cited references are incorporated herein by reference in theirentireties. Citation of any reference is not an admission regarding anydetermination as to its availability as prior art to the claimedinvention.

High Melting Point Fatty Compound

The hair conditioning compositions A and B of the present inventioncomprise a high melting point fatty compound. The high melting fattycompound, together with a cationic surfactant such as an amidoamine andan aqueous carrier, provide a gel network which is suitable forproviding various conditioning benefits such as slippery and slick feelon wet hair, and softness, moisturized feel, and fly-away control on dryhair.

The high melting point fatty compound useful herein have a melting pointof 25° C. or higher, and is selected from the group consisting of fattyalcohols, fatty acids, fatty alcohol derivatives, fatty acidderivatives, and mixtures thereof. It is understood by the artisan thatthe compounds disclosed in this section of the specification can in someinstances fall into more than one classification, e.g., some fattyalcohol derivatives can also be classified as fatty acid derivatives.However, a given classification is not intended to be a limitation onthat particular compound, but is done so for convenience ofclassification and nomenclature. Further, it is understood by theartisan that, depending on the number and position of double bonds, andlength and position of the branches, certain compounds having certainrequired carbon atoms may have a melting point of less than 25° C. Suchcompounds of low melting point are not intended to be included in thissection. Nonlimiting examples of the high melting point compounds arefound in International Cosmetic Ingredient Dictionary, Fifth Edition,1993, and CTFA Cosmetic Ingredient Handbook, Second Edition, 1992.

The high melting point fatty compound is included in the compositions Aand B at a level by weight of from about 0.1% to about 15%, preferablyfrom about 0.25% to about 13%. More preferably, the high melting pointfatty compound is included at a level by weight of from about 1% toabout 10% especially in the composition A, at a level by weight of fromabout 0.25% to about 5% especially in the composition B.

The fatty alcohols useful herein are those having from about 14 to about30 carbon atoms, preferably from about 16 to about 22 carbon atoms.These fatty alcohols are saturated and can be straight or branched chainalcohols. Nonlimiting examples of fatty alcohols include, cetyl alcohol,stearyl alcohol, behenyl alcohol, and mixtures thereof.

The fatty acids useful herein are those having from about 10 to about 30carbon atoms, preferably from about 12 to about 22 carbon atoms, andmore preferably from about 16 to about 22 carbon atoms. These fattyacids are saturated and can be straight or branched chain acids. Alsoincluded are diacids, triacids, and other multiple acids which meet therequirements herein. Also included herein are salts of these fattyacids. Nonlimiting examples of fatty acids include lauric acid, palmiticacid, stearic acid, behenic acid, sebacic acid, and mixtures thereof.

The fatty alcohol derivatives and fatty acid derivatives useful hereininclude alkyl ethers of fatty alcohols, alkoxylated fatty alcohols,alkyl ethers of alkoxylated fatty alcohols, esters of fatty alcohols,fatty acid esters of compounds having esterifiable hydroxy groups,hydroxy-substituted fatty acids, and mixtures thereof. Nonlimitingexamples of fatty alcohol derivatives and fatty acid derivatives includematerials such as methyl stearyl ether; the ceteth series of compoundssuch as ceteth-1 through ceteth-45, which are ethylene glycol ethers ofcetyl alcohol, wherein the numeric designation indicates the number ofethylene glycol moieties present; the steareth series of compounds suchas steareth-1 through 10, which are ethylene glycol ethers of stearethalcohol, wherein the numeric designation indicates the number ofethylene glycol moieties present; ceteareth 1 through ceteareth-10,which are the ethylene glycol ethers of ceteareth alcohol, i.e. amixture of fatty alcohols containing predominantly cetyl and stearylalcohol, wherein the numeric designation indicates the number ofethylene glycol moieties present; C₁-C₃₀ alkyl ethers of the ceteth,steareth, and ceteareth compounds just described; polyoxyethylene ethersof behenyl alcohol; ethyl stearate, cetyl stearate, cetyl palmitate,stearyl stearate, myristyl myristate, polyoxyethylene cetyl etherstearate, polyoxyethylene stearyl ether stearate, polyoxyethylene laurylether stearate, ethyleneglycol monostearate, polyoxyethylenemonostearate, polyoxyethylene distearate, propyleneglycol monostearate,propyleneglycol distearate, trimethylolpropane distearate, sorbitanstearate, polyglyceryl stearate, glyceryl monostearate, glyceryldistearate, glyceryl tristearate, and mixtures thereof.

High melting point fatty compounds of a single compound of high purityare preferred. Single compounds of pure fatty alcohols selected from thegroup of pure cetyl alcohol, stearyl alcohol, and behenyl alcohol arehighly preferred. By “pure” herein, what is meant is that the compoundhas a purity of at least bout 90%, preferably at least about 95%. Thesesingle compounds of high purity provide good rinsability from the hairwhen the consumer rinses off the composition.

Commercially available high melting point fatty compounds useful hereininclude: cetyl alcohol, stearyl alcohol, and behenyl alcohol havingtradenames KONOL series available from Shin Nihon Rika (Osaka, Japan),and NAA series available from NOF (Tokyo, Japan); pure behenyl alcoholhaving tradename 1-DOCOSANOL available from WAKO (Osaka, Japan), variousfatty acids having tradenames NEO-FAT available from Akzo (Chicago Ill.,USA), HYSTRENE available from Witco Corp. (Dublin Ohio, USA), and DERMAavailable from Vevy (Genova, Italy).

Amidoamine

The hair conditioning composition A of the present invention comprisesan amidoamine of the following general formula:R¹CONH(CH₂)_(m)N(R²)₂wherein R¹ is a residue of C₁₁ to C₂₄ fatty acids, R² is a C₁ to C₄alkyl, and m is an integer from 1 to 4.

The amidoamine is included in the composition A at a level by weight offrom about 0.1% to about 10%, preferably from about 0.25% to about 8%,more preferably from about 0.5% to about 3%.

The amidoamine can be also included in the composition B as a cationicconditioning agent at a level by weight of, preferably from about 0.1%to about 10%, more preferably from about 0.25% to about 8%, still morepreferably from about 0.5% to about 3%.

Preferred amidoamines useful in the present invention includesstearamidopropyldimethylamine, stearamidopropyldiethylamine,stearamidoethyldiethylamine, stearamidoethyldimethylamine,palmitamidopropyldimethylamine, palmitamidopropyldiethylamine,palmitamidoethyldiethylamine, palmitamidoethyldimethylamine,behenamidopropyldimethylamine, behenamidopropyldiethylamine,behenamidoethyldiethylamine, behenamidoethyldimethylamine,arachidamidopropyldimethylamine, arachidamidopropyldiethylamine,arachidamidoethyldiethylamine, arachidamidoethyldimethylamine, andmixtures thereof; more preferably stearamidopropyldimethylamine,stearamidoethyldiethylamine, and mixtures thereof.

Commercially available amidoamines useful herein include:stearamidopropyldimethylamine having tradename SAPDMA available fromInolex, and tradename Amidoamine MPS available from Nikko.

Acids

The hair conditioning composition A of the present invention comprisesan acid selected from the group consisting of l-glutamic acid, lacticacid, hydrochloric acid, malic acid, succinic acid, acetic acid, fumaricacid, l-glutamic acid hydrochloride, tartaric acid, and mixturesthereof; preferably l-glutamic acid, lactic acid, hydrochloric acid, andmixtures thereof. The acid is contained at a level such that the moleratio of amidoamine to acid is from about 1:0.3 to about 1:1, preferablyfrom about 1:0.5 to about 1:0.9.

The acid can be also included in the composition B at a level such thatthe mole ratio of amidoamine to acid is from about 1:0.3 to about 1:1,preferably from about 1:0.5 to about 1:0.9.

Commercially available acids useful herein include: l-Glutamic acid:l-Glutamic acid (cosmetic grade) available from Ajinomoto.

Antidandruff Agent

The present compositions A and B comprise a safe and effective amount ofan antidandruff agent. When present, the antidandruff agent is typicallyused at a level from about 0.1% to about 5%, preferably from about 0.3%to about 5%, more preferably from about 0.3% to about 1% by weight ofthe compositions.

Pyrithione salts are useful herein. Suitable pyrithione salts are heavymetal salts of 1-hydroxy-2-pyridinethione, the heavy metal salts beingzinc, tin, cadmium, magnesium, aluminium, and zirconium. Preferred iszinc salt of 1-hydroxy-2-pyridinethione known in the art as zincpyrithione, more preferably in a particle size of up to about 20microns, still preferably from about 1 to about 10 microns. Commericallyavailable pyrithione salts suitable herein include Zinc Pyrithioneavailable from Olin.

Selenium sulfides are useful herein. Selenium sulfides herein includeselenium disulfide, as well as Se_(x)S_(y) in cyclic structure, whereinx and y are integers and x+y equals 8. Preferred selenium sulfides arethose having a particle size of less than about 15 microns, morepreferably less than about 10 microns; wherein the particle size ismeasured by a laser light scatterring device such as Malvern 3600instrument.

Sulfur and octopirox, its salts, and its derivatives are also usefulherein.

Antidandruff agents as mentioned above can be used alone, or incombination with one another.

Preservative System

The present compositions A and B comprise a preservative system whichdoes not interact with the antidandruff agent, yet is effective inpreventing growth of molds in the composition under regular usage andstorage conditions.

The preservative system herein comprises benzyl alcohol, phenoxyethanol, methyl paraben, and propyl paraben. The preservative systemherein, as well as the conditioning composition herein, is substantiallyfree of any chelating agents such as EDTA and its salts, and the agentknown by tradename Kathon CG (mixture of methylchloroisothiazolinone andmethylisothiazolinone). It has been found that, when this preservativesystem is used, the efficacy of the antidandruff agent is not affected,while effectiveness against mold growth is maintained, and conditioningbenefit is not deteriorated. The preservative system contains, by weightof the entire compositions, typically from about 0.1% to about 1.0%,preferably from about 0.2% to about 0.6%, more preferably about 0.4% ofbenzyl alcohol, typically from about 0.1% to about 1.0%, preferably fromabout 0.2% to about 0.5%, more preferably about 0.3% of phenoxy ethanol,typically from about 0.05% to about 1.0%, preferably from about 0.1% toabout 0.5%, more preferably about 0.2% of methyl paraben, and typicallyfrom about 0.01% to about 1.0% preferably from about 0.05% to about0.5%, more preferably about 0.1% of propryl paraben. The total amount ofthe preservative system is such that it does not affect the rheology ofthe condioning compositions.

The preservative system may contain other preservatives at a safe andeffective level, so long as substantially no chelating agent,methylchloroisothiazolinone, or methylisothiazolinone is included.

Aqueous Carrier

The compositions A and B of the present invention comprise an aqueouscarrier. The level and species of the carrier are selected according tothe compatibility with other components, and other desiredcharacteristic of the product.

The carrier useful in the present invention include water and watersolutions of lower alkyl alcohols and polyhydric alcohols. The loweralkyl alcohol useful herein are monohydric alcohols having 1 to 6carbons, more preferably ethanol and isopropanol. The polyhydricalcohols useful herein include propylene glycol, hexylene glycol,glycerin, and propane diol.

Preferably, the aqueous carrier is substantially water. Deionized wateris preferably used. Water from natural sources including mineral cationscan also be used, depending on the desired characteristic of theproduct. Generally, the compositions of the present invention comprisefrom about 20% to about 95%, preferably from about 30% to about 92%, andmore preferably from about 50% to about 90% water.

Cationic Conditioning Agent

The hair conditioning composition B of the present invention comprises acationic conditioning agent. This cationic conditioning agent, togetherwith the high melting point fatty compounds, provide a gel networksuitable for providing various conditioning benefits such as slipperyand slick feel on wet hair, and such as softness, moisturized feel, andfly-away control on dry hair.

The cationic conditioning agent is included in the composition at alevel by weight of from about 0.1% to about 10%, preferably from about0.25% to about 8%, more preferably from about 0.5% to about 3%.

The cationic conditioning agent can be also included in the compositionA at a level by weight of, preferably from about 0.1% to about 10%, morepreferably from about 0.25% to about 8%, still more preferably fromabout 0.5% to about 3%.

The cationic conditioning agent is selected from the group consisting ofcationic surfactants, cationic polymers, and mixtures thereof.

Cationic surfactant

The cationic surfactant useful herein is any known to the artisan, andcan be included in the composition at a level by weight of, preferablyfrom about 0.1% to about 10%, more preferably from about 0.25% to about8%, still more preferably from about 0.5 to about 3%.

Among the cationic surfactants useful herein are those corresponding tothe general formula (I):

wherein at least one of R¹, R², R³, and R⁴ is selected from an aliphaticgroup of from 8 to 30 carbon atoms or an aromatic, alkoxy,polyoxyalkylene, alkylamido, hydroxyalkyl, aryl or alkylaryl grouphaving up to about 22 carbon atoms, the remainder of R¹, R², R³, and R⁴are independently selected from an aliphatic group of from 1 to about 22carbon atoms or an aromatic, alkoxy, polyoxyalkylene, alkylamido,hydroxyalkyl, aryl or alkylaryl group having up to about 22 carbonatoms; and X is a salt-forming anion such as those selected fromhalogen, (e.g. chloride, bromide), acetate, citrate, lactate, glycolate,phosphate, nitrate, sulfonate, sulfate, alkylsulfate, and alkylsulfonate radicals. The aliphatic groups can contain, in addition tocarbon and hydrogen atoms, ether linkages, and other groups such asamino groups. The longer chain aliphatic groups, e.g., those of about 12carbons, or higher, can be saturated or unsaturated. Preferred is whenR¹, R², R³, and R⁴ are independently selected from C₁ to about C₂₂alkyl. Nonlimiting examples of cationic surfactants useful in thepresent invention include the materials having the following CTFAdesignations: quaternium-8, quaternium-14, quaternium-18, quaternium-18methosulfate, quaternium-24, and mixtures thereof.

Among the cationic surfactants of general formula (I), preferred arethose containing in the molecule at least one alkyl chain having atleast 16 carbons. Nonlimiting examples of such preferred cationicsurfactants include: behenyl trimethyl ammonium chloride available, forexample, with tradename INCROQUAT TMC-80 from Croda and ECONOL TM22 fromSanyo Kasei; cetyl trimethyl ammonium chloride available, for example,with tradename CA-2350 from Nikko Chemicals, hydrogenated tallow alkyltrimethyl ammonium chloride, dialkyl (14-18) dimethyl ammonium chloride,ditallow alkyl dimethyl ammonium chloride, dihydrogenated tallow alkyldimethyl ammonium chloride, distearyl dimethyl ammonium chloride,dicetyl dimethyl ammonium chloride, di(behenyl/arachidyl) dimethylammonium chloride, dibehenyl dimethyl ammonium chloride, stearyldimethyl benzyl ammonium chloride, stearyl propyleneglycol phosphatedimethyl ammonium chloride, stearoyl amidopropyl dimethyl benzylammonium chloride, stearoyl amidopropyl dimethyl (myristylacetate)ammonium chloride, and N-(stearoyl colamino formyl methy) pyridiniumchloride.

Also preferred are hydrophilically substituted cationic surfactants inwhich at least one of the substituents contain one or more aromatic,ether, ester, amido, or amino moieties present as substituents or aslinkages in the radical chain, wherein at least one of the R¹-R⁴radicals contain one or more hydrophilic moieties selected from alkoxy(preferably C₁-C₃ alkoxy), polyoxyalkylene (preferably C₁-C₃polyoxyalkylene), alkylamido, hydroxyalkyl, alkylester, and combinationsthereof. Preferably, the hydrophilically substituted cationicconditioning surfactant contains from 2 to about 10 nonionic hydrophilemoieties located within the above stated ranges. Preferredhydrophilically substituted cationic surfactants include those of theformula (II) through (VIII) below:

wherein n is from 8 to about 28, x+y is from 2 to about 40, Z¹ is ashort chain alkyl, preferably a C₁-C₃ alkyl, more preferably methyl, or(CH₂CH₂O)_(z)H wherein x+y+z is up to 60, and X is a salt forming anionas defined above;

wherein m is 1 to 5, one or more of R⁵, R⁶, and R⁷ are independently anC₁-C₃₀ alkyl, the remainder are CH₂CH₂OH, one or two of R⁸, R⁹, and R¹⁰are independently an C₁-C₃₀ alkyl, and remainder are CH₂CH₂OH, and X isa salt forming anion as mentioned above;

wherein, independently for formulae (IV) and (V), Z² is an alkyl,preferably a C₁-C₃ alkyl, more preferably methyl, and Z³ is a shortchain hydroxyalkyl, preferably hydroxymethyl or hydroxyethyl, p and qindependently are integers from 2 to 4, inclusive, preferably from 2 to3, inclusive, more preferably 2, R¹¹ and R¹², independently, aresubstituted or unsubstituted hydrocarbyls, preferably C₁₂-C₂₀ alkyl oralkenyl, and X is a salt forming anion as defined above;

wherein R¹³ is a hydrocarbyl, preferably a C₁-C₃ alkyl, more preferablymethyl, Z⁴ and Z⁵ are, independently, short chain hydrocarbyls,preferably C₂-C₄ alkyl or alkenyl, more preferably ethyl, a is from 2 toabout 40, preferably from about 7 to about 30, and X is a salt forminganion as defined above;

wherein R¹⁴ and R¹⁵, independently, are C₁-C₃ alkyl, preferably methyl,Z⁶ is a C₁₂-C₂₂ hydrocarbyl, alkyl carboxy or alkylamido, and A is aprotein, preferably a collagen, keratin, milk protein, silk, soyprotein, wheat protein, or hydrolyzed forms thereof; and X is a saltforming anion as defined above;

wherein b is 2 or 3, R¹⁶ and R¹⁷, independently are C₁-C₃ hydrocarbylspreferably methyl, and X is a salt forming anion as defined above.Nonlimiting examples of hydrophilically substituted cationic surfactantsuseful in the present invention include the materials having thefollowing CTFA designations: quaternium-16, quaternium-26,quaternium-27, quaternium-30, quaternium-33, quaternium-43,quaternium-52, quaternium-53, quaternium-56, quaternium-60,quaternium-61, quaternium-62, quaternium-70, quaternium-71,quaternium-72, quaternium-75, quaternium-76 hydrolyzed collagen,quaternium-77, quaternium-78, quaternium-79 hydrolyzed collagen,quaternium-79 hydrolyzed keratin, quaternium-79 hydrolyzed milk protein,quaternium-79 hydrolyzed silk, quaternium-79 hydrolyzed soy protein, andquaternium-79 hydrolyzed wheat protein, quaternium-80, quaternium-81,quaternium-82, quaternium-83, quaternium-84, and mixtures thereof.

Highly preferred hydrophilically substituted cationic surfactantsinclude dialkylamido ethyl hydroxyethylmonium salt, dialkylamidoethyldimonium salt, dialkyloyl ethyl hydroxyethylmonium salt, dialkyloylethyldimonium salt, and mixtures thereof; for example, commericallyavailable under the following tradenames; VARISOFT 110, VARIQUAT K1215and 638 from Witco Chemical, MACKPRO KLP, MACKPRO WLW, MACKPRO MLP,MACKPRO NSP, MACKPRO NLW, MACKPRO WWP, MACKPRO NLP, MACKPRO SLP fromMcIntyre, ETHOQUAD 18/25, ETHOQUAD O/12PG, ETHOQUAD C/25, ETHOQUAD S/25,and ETHODUOQUAD from Akzo, DEHYQUAT SP from Henkel, and ATLAS G265 fromICI Americas.

Salts of primary, secondary, and tertiary fatty amines are also suitablecationic surfactants. The alkyl groups of such amines preferably havefrom about 12 to about 22 carbon atoms, and can be substituted orunsubstituted. Particularly useful are salts of amidoamines which areselected from the species disclosed above under the title “AMIDE AMINE”and “ACID”. Preferably, the salts of amidoamines are used as cationicconditioning agents in the composition B.

Cationic Polymer

The cationic polymer useful herein is described below. As used herein,the term “polymer” shall include materials whether made bypolymerization of one type of monomer or made by two (i.e., copolymers)or more types of monomers.

Preferably, the cationic polymer is a water-soluble cationic polymer. By“water soluble” cationic polymer, what is meant is a polymer which issufficiently soluble in water to form a substantially clear solution tothe naked eye at a concentration of 0.1% in water (distilled orequivalent) at 25° C. The preferred polymer will be sufficiently solubleto form a substantially clear solution at 0.5% concentration, morepreferably at 1.0% concentration.

The cationic polymers hereof will generally have a weight averagemolecular weight which is at least about 5,000, typically at least about10,000, and is less than about 10 million. Preferably, the molecularweight is from about 100,000 to about 2 million. The cationic polymerswill generally have cationic nitrogen-containing moieties such asquaternary ammonium or cationic amino moieties, and mixtures thereof.

The cationic charge density is preferably at least about 0.1 meq/gram,more preferably at least about 1.5 meq/gram, even more preferably atleast about 1.1 meq/gram, still more preferably at least about 1.2meq/gram. Cationic charge density of the cationic polymer can bedetermined according to the Kjeldahl Method. Those skilled in the artwill recognize that the charge density of amino-containing polymers mayvary depending upon pH and the isoelectric point of the amino groups.The charge density should be within the above limits at the pH ofintended use.

Any anionic counterions can be utilized for the cationic polymers solong as the water solubility criteria is met. Suitable counterionsinclude halides (e.g., Cl, Br, I, or F, preferably Cl, Br, or I),sulfate, and methylsulfate. Others can also be used, as this list is notexclusive.

The cationic nitrogen-containing moiety will be present generally as asubstituent, on a fraction of the total monomer units of the cationichair conditioning polymers. Thus, the cationic polymer can comprisecopolymers, terpolymers, etc. of quaternary ammonium or cationicamine-substituted monomer units and other non-cationic units referred toherein as spacer monomer units. Such polymers are known in the art, anda variety can be found in the CTFA Cosmetic Ingredient Dictionary, 3rdedition, edited by Estrin, Crosley, and Haynes, (The Cosmetic, Toiletry,and Fragrance Association, Inc., Washington, D.C., 1982).

Suitable cationic polymers include, for example, copolymers of vinylmonomers having cationic amine or quaternary ammonium functionalitieswith water soluble spacer monomers such as acrylamide, methacrylamide,alkyl and dialkyl acrylamides, alkyl and dialkyl methacrylamides, alkylacrylate, alkyl methacrylate, vinyl caprolactone, and vinyl pyrrolidone.The alkyl and dialkyl substituted monomers preferably have C₁-C₇ alkylgroups, more preferably C₁-C₃ alkyl groups. Other suitable spacermonomers include vinyl esters, vinyl alcohol (made by hydrolysis ofpolyvinyl acetate), maleic anhydride, propylene glycol, and ethyleneglycol.

The cationic amines can be primary, secondary, or tertiary amines,depending upon the particular species and the pH of the composition. Ingeneral, secondary and tertiary amines, especially tertiary amines, arepreferred.

Amine-substituted vinyl monomers can be polymerized in the amine form,and then optionally can be converted to ammonium by a quaternizationreaction. Amines can also be similarly quaternized subsequent toformation of the polymer. For example, tertiary amine functionalitiescan be quaternized by reaction with a salt of the formula R′X wherein R′is a short chain alkyl, preferably a C₁-C₇ alkyl, more preferably aC₁-C₃ alkyl, and X is an anion which forms a water soluble salt with thequaternized ammonium.

Suitable cationic amino and quaternary ammonium monomers include, forexample, vinyl compounds substituted with dialkylaminoalkyl acrylate,dialkylaminoalkyl methacrylate, monoalkylaminoalkyl acrylate,monoalkylaminoalkyl methacrylate, trialkyl methacryloxyalkyl ammoniumsalt, trialkyl acryloxyalkyl ammonium salt, diallyl quaternary ammoniumsalts, and vinyl quaternary ammonium monomers having cyclic cationicnitrogen-containing rings such as pyridinium, imidazolium, andquaternized pyrrolidone, e.g., alkyl vinyl imidazolium, alkyl vinylpyridinium, alkyl vinyl pyrrolidone salts. The alkyl portions of thesemonomers are preferably lower alkyls such as the C₁-C₃ alkyls, morepreferably C₁ and C₂ alkyls. Suitable amine-substituted vinyl monomersfor use herein include dialkylaminoalkyl acrylate, dialkylaminoalkylmethacrylate, dialkylaminoalkyl acrylamide, and dialkylaminoalkylmethacrylamide, wherein the alkyl groups are preferably C₁-C₇hydrocarbyls, more preferably C₁-C₃, alkyls.

The cationic polymers hereof can comprise mixtures of monomer unitsderived from amine- and/or quaternary ammonium-substituted monomerand/or compatible spacer monomers.

Suitable cationic hair conditioning polymers include, for example:copolymers of 1-vinyl-2-pyrrolidone and 1-vinyl-3-methylimidazolium salt(e.g., chloride salt) (referred to in the industry by the Cosmetic,Toiletry, and Fragrance Association, “CTFA”, as Polyquaternium-16), suchas those commercially available from BASF Wyandotte Corp. (Parsippany,N.J., USA) under the LUVIQUAT tradename (e.g., LUVIQUAT FC 370);copolymers of 1-vinyl-2-pyrrolidone and dimethylaminoethyl methacrylate(referred to in the industry by CTFA as Polyquaternium-11) such as thosecommercially available from Gaf Corporation (Wayne, N.J., USA) under theGAFQUAT tradename (e.g., GAFQUAT 755N); cationic diallyl quaternaryammonium-containing polymers, including, for example,dimethyldiallylammonium chloride homopolymer and copolymers ofacrylamide and dimethyldiallylammonium chloride, referred to in theindustry (CTFA) as Polyquaternium 6 and Polyquaternium 7, respectively;and mineral acid salts of amino-alkyl esters of homo- and co-polymers ofunsaturated carboxylic acids having from 3 to 5 carbon atoms, asdescribed in U.S. Pat. No. 4,009,256, incorporated herein by reference.

Other cationic polymers that can be used include polysaccharidepolymers, such as cationic cellulose derivatives and cationic starchderivatives.

Cationic polysaccharide polymer materials suitable for use hereininclude those of the formula:

wherein: A is an anhydroglucose residual group, such as a starch orcellulose anhydroglucose residual, R is an alkylene oxyalkylene,polyoxyalkylene, or hydroxyalkylene group, or combination thereof, R¹,R², and R³ independently are alkyl, aryl, alkylaryl, arylalkyl,alkoxyalkyl, or alkoxyaryl groups, each group containing up to about 18carbon atoms, and the total number of carbon atoms for each cationicmoiety (i.e., the sum of carbon atoms in R¹, R² and R³) preferably beingabout 20 or less, and X is an anionic counterion, as previouslydescribed.

Cationic cellulose is available from Amerchol Corp. (Edison, N.J., USA)in their Polymer JR® and LR® series of polymers, as salts ofhydroxyethyl cellulose reacted with trimethyl ammonium substitutedepoxide, referred to in the industry (CTFA) as Polyquaternium 10.Another type of cationic cellulose includes the polymeric quaternaryammonium salts of hydroxyethyl cellulose reacted with lauryl dimethylammonium-substituted epoxide, referred to in the industry (CTFA) asPolyquaternium 24. These materials are available from Amerchol Corp.(Edison, N.J., USA) under the tradename Polymer LM-200®.

Other cationic polymers that can be used include cationic guar gumderivatives, such as guar hydroxypropyltrimonium chloride (commerciallyavailable from Celanese Corp. in their Jaguar R series). Other materialsinclude quaternary nitrogen-containing cellulose ethers (e.g., asdescribed in U.S. Pat. No. 3,962,418, incorporated herein by reference),and copolymers of etherified cellulose and starch (e.g., as described inU.S. Pat. No. 3,958,581, incorporated herein by reference.)

Low Melting Point Oil

The hair conditioning composition B of the present invention comprises alow melting point oil, which has a melting point of less than 25° C.,and is included in the composition at a level by weight of from about0.1% to about 10%, preferably from about 0.25% to about 6%.

The low melting point oil having a melting point of less than 25° C.,can be also included in the composition A at a level by weight of,preferably from about 0.1% to about 10%, more preferably from about0.25% to about 6%, still more preferably from about 0.3% to about 3%.

The low melting point oil useful herein is selected from the groupconsisting of hydrocarbon having from 10 to about 40 carbon atoms,unsaturated fatty alcohols having from about 10 to about 30 carbonatoms, unsaturated fatty acids having from about 10 to about 30 carbonatoms, fatty acid derivatives, fatty alcohol derivatives, ester oils,poly α-olefin oils, and mixtures thereof.

Fatty alcohols useful herein include those having from about 10 to aboutcarbon atoms, preferably from about 12 to about 22 carbon atoms, andmore preferably from about 16 to about 22 carbon atoms. These fattyalcohols are unsaturated and can be straight or branched chain alcohols.Suitable fatty alcohols include, for example, oleyl alcohol, isostearylalcohol, tridecylalcohol, decyl tetradecyl alcohol, and octyl dodecylalcohol. These alcohols are available, for example, from Shinnihon Rika.

Low melting point oils useful herein include pentaerythritol ester oils,trimethylol ester oils, poly α-olefin oils, citrate ester oils, glycerylester oils, and mixtures thereof, and the ester oil useful herein iswater-insoluble. As used herein, the term “water-insoluble” means thecompound is substantially not soluble in water at 25° C.; when thecompound is mixed with water at a concentration by weight of above 1.0%,preferably at above 0.5%, the compound is temporarily dispersed to forman unstable colloid in water, then is quickly separated from water intotwo phases.

Pentaerythritol ester oils useful herein are those having the followingformula:

wherein R¹, R², R³, and R⁴, independently, are branched, straight,saturated, or unsaturated alkyl, aryl, and alkylaryl groups having from1 to about 30 carbons. Preferably, R¹, R², R³, and R⁴, independently,are branched, straight, saturated, or unsaturated alkyl groups havingfrom about 8 to about 22 carbons. More preferably, R¹, R², R³ and R⁴ aredefined so that the molecular weight of the compound is from about 800to about 1200.

Trimethylol ester oils useful herein are those having the followingformula:

wherein R¹¹ is an alkyl group having from 1 to about 30 carbons, andR¹², R¹³, and R¹⁴, independently, are branched, straight, saturated, orunsaturated alkyl, aryl, and alkylaryl groups having from 1 to about 30carbons. Preferably, R¹¹ is ethyl and R¹², R¹³, and R¹⁴, independently,are branched, straight, saturated, or unsaturated alkyl groups havingfrom 8 to about 22 carbons. More preferably, R¹¹, R¹², R¹³ and R¹⁴ aredefined so that the molecular weight of the compound is from about 800to about 1200.

Particularly useful pentaerythritol ester oils and trimethylol esteroils herein include pentaerythritol tetraisostearate, pentaerythritoltetraoleate, trimethylolpropane triisostearate, trimethylolpropanetrioleate, and mixtures thereof. Such compounds are available from KokyoAlcohol with tradenames KAKPTI, KAKTTI, and Shin-nihon Rika withtradenames PTO, ENUJERUBU TP3SO.

Poly α-olefin oils useful herein are those derived from 1-alkenemonomers having from about 6 to about 16 carbons, preferably from about6 to about 12 carbons atoms. Nonlimiting examples of 1-alkene monomersuseful for preparing the poly α-olefin oils include 1-hexene, 1-octene,1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, branched isomers suchas 4-methyl-1-pentene, and mixtures thereof. Preferred 1-alkene monomersuseful for preparing the poly α-olefin oils are 1-octene, 1-decene,1-dodecene, 1-tetradecene, 1-hexadecene, and mixtures thereof. Polyα-olefin oils useful herein further have a viscosity of from about 1 toabout 35,000 cst, a molecular weight of from about 200 to about 60,000,and a polydispersity of no more than about 3.

Poly α-olefin oils having a molecular weight of at least about 800 areuseful herein. Such high molecular weight poly α-olefin oils arebelieved to provide long lasting moisturized feel to the hair. Polyα-olefin oils having a molecular weight of less than about 800 areuseful herein. Such low molecular weight poly α-olefin oils are believedto provide a smooth, light, clean feel to the hair.

Particularly useful poly α-olefin oils herein include polydecenes withtradenames PURESYN 6 having a number average molecular weight of about500 and PURESYN 100 having a number average molecular weight of about3000 and PURESYN 300 having a number average molecular weight of about6000 available from Mobil Chemical Co.

Citrate ester oils useful herein are those having a molecular weight ofat least about 500 having the following formula:

wherein R²¹ is OH or CH₃COO, and R²², R²³, and R²⁴, independently, arebranched, straight, saturated, or unsaturated alkyl, aryl, and alkylarylgroups having from 1 to about 30 carbons. Preferably, R²¹ is OH, andR²², R²³, and R²⁴, independently, are branched, straight, saturated, orunsaturated alkyl, aryl, and alkylaryl groups having from 8 to about 22carbons. More preferably, R²¹, R²², R²³ and R²⁴ are defined so that themolecular weight of the compound is at least about 800.

Particularly useful citrate ester oils herein include triisocetylcitrate with tradename CITMOL 316 available from Bernel, triisostearylcitrate with tradename PELEMOL TISC available from Phoenix, andtrioctyldodecyl citrate with tradename CITMOL 320 available from Bernel.

Glyceryl ester oils useful herein are those having a molecular weight ofat least about 500 and having the following formula:

wherein R⁴¹, R⁴², and R⁴³, independently, are branched, straight,saturated, or unsaturated alkyl, aryl, and alkylaryl groups having from1 to about 30 carbons. Preferably, R⁴¹, R⁴², and R⁴³, independently arebranched, straight, saturated, or unsaturated alkyl, aryl, and alkylarylgroups having from 8 to about 22 carbons. More preferably, R⁴¹, R⁴², andR⁴³ are defined so that the molecular weight of the compound is at leastabout 800.

Particularly useful glyceryl ester oils herein include triisostearinwith tradename SUN ESPOL G-318 available from Taiyo Kagaku, trioleinwith tradename CITHROL GTO available from Croda Surfactants Ltd.,trilinolein with tradename EFADERMA-F available from Vevy, or tradenameEFA-GLYCERIDES from Brooks.

Silicone Compounds

Preferably, the composition A of the present invention may furthercomprises silicone compound. The silicone compound can be included inthe composition A at a level by weight of, preferably from about 0.1% toabout 10%, more preferably from about 0.25% to about 8%, still morepreferably from about 0.5% to about 3%.

The silicone compound can be also included in the composition B at alevel by weight of, preferably from about 0.1% to about 10%, morepreferably from about 0.25% to about 8%, still more preferably fromabout 0.5% to about 3%.

The silicone compounds hereof can include volatile soluble or insoluble,or nonvolatile soluble or insoluble silicone conditioning agents. Bysoluble what is meant is that the silicone compound is miscible with thecarrier of the composition so as to form part of the same phase. Byinsoluble what is meant is that the silicone forms a separate,discontinuous phase from the carrier, such as in the form of an emulsionor a suspension of droplets of the silicone. The silicone compoundsherein may be made by conventional polymerization, or emulsionpolymerization.

The silicone compounds for use herein will preferably have a viscosityof from about 1,000 to about 2,000,000 centistokes at 25° C., morepreferably from about 10,000 to about 1,800,000, and even morepreferably from about 25,000 to about 1,500,000. The viscosity can bemeasured by means of a glass capillary viscometer as set forth in DowCorning Corporate Test Method CTM0004, Jul. 20, 1970, which isincorporated by reference herein in its entirety. Silicone compound ofhigh molecular weight may be made by emulsion polymerization.

Silicone compounds useful herein include polyalkyl polyaryl siloxanes,polyalkyleneoxide-modified siloxanes, silicone resins, amino-substitutedsiloxanes, and mixtures thereof. The silicone compound is preferablyselected from the group consisting of polyalkyl polyaryl siloxanes,polyalkyleneoxide-modified siloxanes, silicone resins, and mixturesthereof, and more preferably from one or more polyalkyl polyarylsiloxanes.

Polyalkyl polyaryl siloxanes useful here in include those with thefollowing structure (I)

wherein R is alkyl or aryl, and x is an integer from about 7 to about8,000. “A” represents groups which block the ends of the siliconechains. The alkyl or aryl groups substituted on the siloxane chain (R)or at the ends of the siloxane chains (A) can have any structure as longas the resulting silicone remains fluid at room temperature, isdispersible, is neither irritating, toxic nor otherwise harmful whenapplied to the hair, is compatible with the other components of thecomposition, is chemically stable under normal use and storageconditions, and is capable of being deposited on and conditions thehair. Suitable A groups include hydroxy, methyl, methoxy, ethoxy,propoxy, and aryloxy. The two R groups on the silicon atom may representthe same group or different groups. Preferably, the two R groupsrepresent the same group. Suitable R groups include methyl, ethyl,propyl, phenyl, methylphenyl and phenylmethyl. The preferred siliconecompounds are polydimethylsiloxane, polydiethylsiloxane, andpolymethylphenylsiloxane. Polydimethylsiloxane, which is also known asdimethicone, is especially preferred. The polyalkylsiloxanes that can beused include, for example, polydimethylsiloxanes. These siliconecompounds are available, for example, from the General Electric Companyin their ViscasilR and SF 96 series, and from Dow Corning in their DowCorning 200 series. Polymethylphenylsiloxanes, for example, from theGeneral Electric Company as SF 1075 methyl phenyl fluid or from DowCorning as 556 Cosmetic Grade Fluid, are useful herein.

Also preferred, for enhancing the shine characteristics of hair, arehighly arylated silicone compounds, such as highly phenylated polyethylsilicone having refractive index of about 1.46 or higher, especiallyabout 1.52 or higher. When these high refractive index siliconecompounds are used, they should be mixed with a spreading agent, such asa surfactant or a silicone resin, as described below to decrease thesurface tension and enhance the film forming ability of the material.

Another polyalkyl polyaryl siloxane that can be especially useful is asilicone gum. The term “silicone gum”, as used herein, means apolyorganosiloxane material having a viscosity at 25° C. of greater thanor equal to 1,000,000 centistokes. It is recognized that the siliconegums described herein can also have some overlap with theabove-disclosed silicone compounds. This overlap is not intended as alimitation on any of these materials. Silicone gums are described byPetrarch, and others including U.S. Pat. No. 4,152,416, to Spitzer etal., issued May 1, 1979 and Noll, Walter, Chemistry and Technology ofSilicones, New York: Academic Press 1968. Also describing silicone gumsare General Electric Silicone Rubber Product Data Sheets SE 30, SE 33,SE 54 and SE 76. All of these described references are incorporatedherein by reference in, their entirety. The “silicone gums” willtypically have a mass molecular weight in excess of about 200,000,generally between about 200,000 and about 1,000,000. Specific examplesinclude polydimethylsiloxane, poly(dimethylsiloxane methylvinylsiloxane)copolymer, poly(dimethylsiloxane diphenylsiloxane methylvinylsiloxane)copolymer and mixtures thereof.

Polyalkyleneoxide-modified siloxanes useful herein include, for example,polypropylene oxide modified and polyethylene oxide modifiedpolydimethylsiloxane. The ethylene oxide and polypropylene oxide levelshould be sufficiently low so as not to interfere with thedispersibility characteristics of the silicone. These material are alsoknown as dimethicone copolyols.

Silicone resins, which are highly crosslinked polymeric siloxanesystems, are useful herein. The crosslinking is introduced through theincorporation of tri-functional and tetra-functional silanes withmono-functional or di-functional, or both, silanes during manufacture ofthe silicone resin. As is well understood in the art, the degree ofcrosslinking that is required in order to result in a silicone resinwill vary according to the specific silane units incorporated into thesilicone resin. In general, silicone materials which have a sufficientlevel of tri-functional and tetra-functional siloxane monomer units, andhence, a sufficient level of crosslinking, such that they dry down to arigid, or hard, film are considered to be silicone resins. The ratio ofoxygen atoms to silicon atoms is indicative of the level of crosslinkingin a particular silicone material. Silicone materials which have atleast about 1.1 oxygen atoms per silicon atom will generally be siliconeresins herein. Preferably, the ratio of oxygen:silicon atoms is at leastabout 1.2:1.0. Silanes used in the manufacture of silicone resinsinclude monomethyl-, dimethyl-, trimethyl-, monophenyl-, diphenyl-,methylphenyl-, monovinyl-, and methylvinylchlorosilanes, andtetrachlorosilane, with the methyl substituted silanes being mostcommonly utilized. Preferred resins are offered by General Electric asGE SS4230 and SS4267. Commercially available silicone resins willgenerally be supplied in a dissolved form in a low viscosity volatile ornonvolatile silicone fluid. The silicone resins for use herein should besupplied and incorporated into the present compositions in suchdissolved form, as will be readily apparent to those skilled in the art.Without being bound by theory, it is believed that the silicone resinscan enhance deposition of other silicone compounds on the hair and canenhance the glossiness of hair with high refractive index volumes.

Other useful silicone resins are silicone resin powders such as thematerial given the CTFA designation polymethylsilsequioxane, which iscommercially available as Tospearl™ from Toshiba Silicones.

Silicone resins can conveniently be identified according to a shorthandnomenclature system well known to those skilled in the art as the “MDTQ”nomenclature. Under this system, the silicone is described according tothe presence of various siloxane monomer units which make up thesilicone. Briefly, the symbol M denotes the mono-functional unit(CH₃)₃SiO)_(.5); D denotes the difunctional unit (CH₃)₂SiO; T denotesthe trifunctional unit (CH₃)SiO_(1.5); and Q denotes the quadri- ortetra-functional unit SiO₂. Primes of the unit symbols, e.g., M′, D′,T′, and Q′ denote substituents other than methyl, and must bespecifically defined for each occurrence. Typical alternate substituentsinclude groups such as vinyl, phenyl, amino, hydroxyl, etc. The molarratios of the various units, either in terms of subscripts to thesymbols indicating the total number of each type of unit in thesilicone, or an average thereof, or as specifically indicated ratios incombination with molecular weight, complete the description of thesilicone material under the MDTQ system. Higher relative molar amountsof T, Q, T′ and/or Q′ to D, D′, M and/or or M′ in a silicone resin isindicative of higher levels of crosslinking. As discussed before,however, the overall level of crosslinking can also be indicated by theoxygen to silicon ratio.

The silicone resins for use herein which are preferred are MQ, MT, MTQ,MQ and MDTQ resins. Thus, the preferred silicone substituent is methyl.Especially preferred are MQ resins wherein the M:Q ratio is from about0.5:1.0 to about 1.5:1.0 and the average molecular weight of the resinis from about 1000 to about 10,000.

Other amino-substituted siloxane which can be used are represented bythe formula (V):

where R³ denotes a monovalent hydrocarbon radical having from 1 to 18carbon atoms, preferably an alkyl or alkenyl radical such as methyl; R₄denotes a hydrocarbon radical, preferably a C₁-C₁₈ alkylene radical or aC₁-C₁₈, and more preferably C₁-C₈, alkyleneoxy radical; Q⁻ is a halideion, preferably chloride; r denotes an average statistical value from 2to 20, preferably from 2 to 8; s denotes an average statistical valuefrom 20 to 200, and preferably from 20 to 50. A preferred polymer ofthis class is available from Union Carbide under the name “UCAR SILICONEALE 56.”Polypropylene Glycol

Preferably, the composition A of the present invention may furthercomprises a polypropylene glycol. The polypropylene glycol can beincluded in the composition A at a level by weight of, preferably fromabout 0.1% to about 10%, more preferably from about 0.25% to about 6%.

The polypropylene glycol can be also included in the composition B at alevel by weight of, preferably from about 0.1% to about 10%, morepreferably from about 0.25% to about 6%.

The polypropylene glycol useful herein may has a weight averagemolecular weight of preferably from about 200 g/mol to about 100,000g/mol, more preferably from about 1,000 g/mol to about 60,000 g/mol.Without intending to be limited by theory, it is believed that thepolypropylene glycol herein deposits onto, or is absorbed into hair toact as a moisturizer buffer, and/or provides one or more other desirablehair conditioning benefits. As used herein, the term “polypropyleneglycol” includes single-polypropylene glycol-chain segment polymers, andmulti-polypropylene glycol-chain segment polymers. The general structureof branched polymers such as the multi-polypropylene glycol-chainsegment polymers herein are described, for example, in “Principles ofPolymerization,” pp. 17-19, G. Odian, (John Wiley & Sons, Inc., 3^(rd)ed., 1991).

The polypropylene glycol herein are typically polydisperse polymers. Thepolypropylene glycols useful herein have a polydispersity of from about1 to about 2.5, preferably from about 1 to about 2, and more preferablyfrom about 1 to about 1.5. As used herein, the term “polydispersity”indicates the degree of the molecular weight distribution of the polymersample. Specifically, the polydispersity is a ratio, greater than 1,equal to the weight average molecular weight divided by the numberaverage molecular weight. For a further discussion about polydispersity,see “Principles of Polymerization,” pp. 20-24, G. Odian, (John Wiley &Sons, Inc., 3^(rd) ed., 1991).

The polypropylene glycol useful herein may be either water-soluble,water-insoluble, or may have a limited solubility in water, dependingupon the degree of polymerization and whether other moieties areattached thereto. The desired solubility of the polypropylene glycol inwater will depend in large part upon the form (e.g., leave-on, orrinse-off form) of the hair care composition. The solubility in water ofthe polypropylene glycol herein may be chosen by the artisan accordingto a variety of factors. Accordingly, for a leave-on hair carecomposition, it is preferred that the polypropylene glycol herein be awater-soluble polypropylene glycol. Solubility information is readilyavailable from polypropylene glycol suppliers, such as Sanyo Kasei(Osaka, Japan). However, the present invention may also take the form ofa rinse-off hair care composition. Without intending to be limited bytheory, it is believed that in such a composition, a water-solublepolypropylene glycol may be too easily washed away before it effectivelydeposits on hair and provides the desired benefit(s). For such acomposition, a less soluble, or even a water-insoluble polypropyleneglycol is therefore preferred. Accordingly, for a rinse-off hair carecomposition, it is preferred that the polypropylene glycol herein has asolubility in water at 25° C. of less than about 1 g/100 g water, morepreferably a solubility in water of less than about 0.5 g/100 g water,and even more preferably a solubility in water of less than about 0.1g/100 g water.

Preferably the polypropylene glycol is selected from the groupconsisting of a single-polypropylene glycol-chain segment polymer, amulti-polypropylene glycol-chain segment polymer, and mixtures thereof,more preferably selected from the group consisting of asingle-polypropylene glycol-chain segment polymer of Formula I, below, amulti-polypropylene glycol-chain segment polymer of Formula II, below,and mixtures thereof.

Single-Polypropylene Glycol-Chain Segment Polymer

Accordingly, a highly preferred single-polypropylene glycol-chainsegment polymer has the formula:HO—(C₃H₆O)_(a)H  (III),wherein a is a value from about 4 to about 400, preferably from about 20to about 100, and more preferably from about 20 to about 40.

The single-polypropylene glycol-chain segment polymer useful herein istypically inexpensive, and is readily available from, for example, SanyoKasei (Osaka, Japan), Dow Chemicals (Midland, Mich., USA), CalgonChemical, Inc. (Skokie, Ill., USA), Arco Chemical Co. (Newton SquarePa., USA), Witco Chemicals Corp. (Greenwich, Conn., USA), and PPGSpecialty Chemicals (Gumee, Ill., USA).

Multi-Polypropylene Glycol-Chain Segment Polymer

A highly preferred multi-polypropylene glycol-chain segment polymer hasthe formula:

wherein n is a value from about 0 to about 10, preferably from about 0to about 7, and more preferably from about 1 to about 4. In Formula IV,each R″ is independently selected from the group consisting of H, andC₁-C₃₀ alkyl, and preferably each R″ is independently selected from thegroup consisting of H, and C₁-C₄ alkyl. In Formula IV, each b isindependently a value from about 0 to about 2, preferably from about 0to about 1, and more preferably b=0. Similarly, c and d areindependently a value from about 0 to about 2, preferably from about 0to about 1. However, the total of b+c+d is at least about 2, preferablythe total of b+c+d is from about 2 to about 3. Each e is independently avalue of 0 or 1, if n is from about 1 to about 4, then e is preferablyequal to 1. Also in Formula IV, x, y, and z is independently a value offrom about 1 to about 120, preferably from about 7 to about 100, andmore preferably from about 7 to about 100, where x+y+z is greater thanabout 20.

Examples of the multi-polypropylene glycol-chain segment polymer ofFormula IV which is especially useful herein includes polyoxypropyleneglyceryl ether (n=1, R′=H, b=0, c and d=1, e=1, and x, y, and zindependently indicate the degree of polymerization of their respectivepolypropylene glycol-chain segments; available as New Pol GP-4000, fromSanyo Kasei, Osaka, Japan), polypropylene trimethylol propane (n=1,R′=C₂H₅, b=1, c and d=1, e=1, and x, y, and z independently indicate thedegree of polymerization of their respective polypropylene glycol-chainsegments), polyoxypropylene sorbitol (n=4, each R′=H, b=0, c and d=1,each e=1, and y, z, and each x independently indicate the degree ofpolymerization of their respective polypropylene glycol-chain segments;available as New Pol SP-4000, from Sanyo Kasei, Osaka, Japan), andPPG-10 butanediol (n=0, c and d=2, and y+z=10; available as ProbutylDB-10, from Croda, Inc., of Parsippany, N.J., U.S.A.).

In a preferred embodiment, one or more of the propylene repeating groupsin the polypropylene glycol is an isopropyl oxide repeating group. Morepreferably one or more of the propylene oxide repeating groups of thepolypropylene glycol of Formula III and/or the polypropylene glycol ofFormula IV is an isopropyl oxide repeating group. Even more preferably,substantially all of the propylene oxide repeating groups of thepolypropylene glycol of Formula III and/or the polypropylene glycol ofFormula IV are isopropyl oxide repeating groups. Accordingly, a highlypreferred single-polypropylene glycol-chain segment polymer has theformula:

wherein a is defined as described above for Formula III. Similarly, ahighly preferred multi-polypropylene glycol-chain segment polymer hasthe formula:

wherein n, R″, b, c, d, e, x, y, and z are defined as above, for FormulaIV. It is recognized that the isopropyl oxide repeating groups may alsocorrespond either alone, or in combination with the above depicted, to:

The polypropylene glycol useful herein is readily available from, forexample, Sanyo Kasei (Osaka, Japan) as New pol PP-2000, New pol PP-4000,New pol GP-4000, and New pol SP-4000, from Dow Chemicals (Midland,Mich., USA), from Calgon Chemical, Inc. (Skokie, Ill., USA), from ArcoChemical Co. (Newton Square Pa., USA), from Witco Chemicals Corp.(Greenwich, Conn., USA), and from PPG Specialty Chemicals (Gumee, Ill.,USA).

Polyethylene Glycol

Preferably, the composition B of present invention may further comprisea polyethylene glycol having the formula:H(OCH₂CH₂)_(n)—OHwherein n has an average value of from 2,000 to 14,000, preferably fromabout 5,000 to about 9,000, more preferably from about 6,000 to about8,000.

The polyethylene glycol can be included in the composition B at a levelby weight of, preferably from about 0.1% to about 10%, more preferablyfrom about 0.25% to about 6%.

The polyethylene glycol can be also included in the composition A at alevel by weight of, preferably from about 0.1% to about 10%, morepreferably from about 0.25% to about 6%.

The polyethylene glycol described above is also known as a polyethyleneoxide, and polyoxyethylene. Polyethylene glycols useful herein that areespecially preferred are PEG-2M wherein n has an average value of about2,000 (PEG-2M is also known as Polyox WSR® N-10 from Union Carbide andas PEG-2,000); PEG-5M wherein n has an average value of about 5,000(PEG-5M is also known as Polyox WSR® N-35 and as Polyox WSR® N-80, bothfrom Union Carbide and as PEG-5,000 and Polyethylene Glycol 300,000);PEG-7M wherein n has an average value of about 7,000 (PEG-7M is alsoknown as Polyox WSR® N-750 from Union Carbide); PEG-9M wherein n has anaverage value of about 9,000 (PEG-9M is also known as Polyox WSR® N-3333from Union Carbide); and PEG-14M wherein n has an average value of about14,000 (PEG-14M is also known as Polyox WSR® N-3000 from Union Carbide).

Sensates

The hair conditioning compositions A and B of the present invention mayfurther comprise a sensate. As used herein the term “sensate” means asubstance that, when applied to the skin, causes a perceived sensationof a change in conditions, for example, but not limited to, heating,cooling, refreshing and the like.

Sensates are preferably utilized at levels of from about 0.001% to about10%, more preferably from about 0.005% to about 5%, even more preferablyfrom about 0.01% to about 1%, by weight, of the total compositions.

Any sensate suitable for use in hair care compositions may be usedherein. A non-limiting, exemplary list of suitable sensates can be foundin GB-B-1315626, GB-B-1404596 and GB-B-1411785, all incorporated byreference herein. Preferred sensates for use in the compositions hereinare camphor, menthol, l-isopulegol, ethyl menthane carboxamide andtrimethyl isopropyl butanamide.

Compositions

In one preferred embodiment of the present invention, the compositioncomprises by weight:

-   (a) from about 0.1% to about 15%, preferably from about 1% to about    10% of a high melting point fatty compound, preferably, the high    melting point fatty compound selected from the group consisting of    cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures    thereof;-   (b) from about 0.1% to about 10%, preferably from about 0.5% to    about 3% of an amidoamine having the following general formula:    R¹CONH(CH₂)_(m) N(R²)₂-    wherein R¹ is a residue of C₁₁ to C₂₄ fatty acids, R² is a C₁ to C₄    alkyl, and m is an integer from 1 to 4, preferably, the amidoamine    selected from the group consisting of stearamidopropyl    dimethylamine, stearamidoethyl diethylamine, and mixtures thereof;-   (c) an acid selected from the group consisting of l-glutamic acid,    lactic acid, hydrochloric acid, malic acid, succinic acid, acetic    acid, fumaric acid, l-glutamic acid hydrochloride, tartaric acid,    and mixtures thereof, at a level such that the mole ratio of    amidoamine to acid is from about 1:0.3 to about 1:1, preferably,    l-Glutamic acid at a level such that the mole ratio of amidoamine to    acid is from about 1:0.5 to about 1:0.9;-   (d) a safe and effective amount of an antidandruff agent,    preferably, from about 0.3% to about 1% of zinc pyrithione;-   (e) a preservative system comprising, by weight of the entire    composition, from about 0.1% to about 1.0% of benzyl alcohol, from    about 0.1% to about 1.0% of phenoxy ethanol, from about 0.05% to    about 1.0% of methyl paraben, and from about 0.01% to about 1.0% of    propyl paraben; and-   (f) an aqueous carrier;    wherein the hair conditioning composition is substantially free of    the group selected from a chelating agent,    methylchloroisothiazolinone, and methylisothiazolinone.

This composition may further contain a silicone compound at a level byweight of from about 0.1% to about 10%, and a sensate at a level byweight of from about 0.001% to about 10%.

In another preferred embodiment of the present invention, thecomposition comprises by weight:

-   (a) from about 0.1% to about 15%, preferably from about 1% to about    10% of a high melting point fatty compound having a melting point of    25° C. or higher,-   (b) from about 0.1% to about 10%, preferably from about 0.25% to    about 5% of a cationic conditioning agent;-   (c) a safe and effective amount of an antidandruff agent,    preferably, from about 0.3% to about 1% of zinc pyrithione;-   (d) a preservative system comprising, by weight of the entire    composition, from about 0.1% to about 1.0% of benzyl alcohol, from    about 0.1% to about 1.0% of phenoxy ethanol, from about 0.05% to    about 1.0% of methyl paraben, and from about 0.01% to about 1.0% of    propyl paraben;-   (e) an aqueous carrier; and-   (f) from about 0.1% to about 10%, preferably from about 0.25% to    about 6% of a polypropylene glycol,    wherein the hair conditioning composition is substantially free of    the group selected from a chelating agent,    methylchloroisothiazolinone, and methylisothiazolinone.

This composition may further contain a low melting point oil having amelting point of less than 25° C. at a level by weight of from about0.1% to about 10%, preferably from about 0.25% to about 6%, morepreferably from about 0.3% to about 3%, and a sensate at a level byweight of from about 0.001% to about 10%.

In another preferred embodiment of the present invention, thecomposition comprises by weight:

-   (a) from about 0.1% to about 15%, preferably from about 0.25% to    about 5% of a high melting point fatty compound having a melting    point of 25° C. or higher,-   (b) from about 0.1% to about 10%, preferably from about 0.25% to    about 5% of a cationic conditioning agent;-   (c) from about 0.1% to about 10%, preferably from about 0.25% to    about 6% of a low melting point oil having a melting point of less    than 25° C., preferably, the low melting point oil being an    unsaturated oil;-   (d) a safe and effective amount of an antidandruff agent,    preferably, from about 0.3% to about 1% of zinc pyrithione;-   (e) a preservative system comprising, by weight of the entire    composition, from about 0.1% to about 1.0% of benzyl alcohol, from    about 0.1% to about 1.0% of phenoxy ethanol, from about 0.05% to    about 1.0% of methyl paraben, and from about 0.01% to about 1.0% of    propyl paraben;-   (f) an aqueous carrier; and-   (g) from about 0.1% to about 10%, preferably from about 0.25% to    about 6% of a polyethylene glycol,    wherein the hair conditioning composition is substantially free of    the group selected from a chelating agent,    methylchloroisothiazolinone, and methylisothiazolinone.

This composition may further contain a sensate at a level by weight offrom about 0.001% to about 10%.

Additional Components

A wide variety of other additional components can be formulated into thepresent compositions. These include: other conditioning agents such ashydrolysed collagen with tradename Peptein 2000 available from Hormel,vitamin E with tradename Emix-d available from Eisai, panthenolavailable from Roche, panthenyl ethyl ether available from Roche, amixture of Polysorbate 60 and Cetearyl Alcohol with tradename Polawax NFavailable from Croda Chemicals, glycerylmonostearate available fromStepan Chemicals, hydroxyethyl cellulose available from Aqualon,3-pyridinecarboxy acid amide (niacinamide), hydrolysed keratin,proteins, plant extracts, and nutrients; hair-fixative polymers such asamphoteric fixative polymers, cationic fixative polymers, anionicfixative polymers, nonionic fixative polymers, and silicone graftedcopolymers; preservatives such as benzyl alcohol, methyl paraben, propylparaben and imidazolidinyl urea; pH adjusting agents, such as citricacid, sodium citrate, succinic acid, phosphoric acid, sodium hydroxide,sodium carbonate; salts, in general, such as potassium acetate andsodium chloride; coloring agents, such as any of the FD&C or D&C dyes;hair oxidizing (bleaching) agents, such as hydrogen peroxide, perborateand persulfate salts; hair reducing agents such as the thioglycolates;perfumes; and sequestering agents, such as disodium ethylenediaminetetra-acetate; ultraviolet and infrared screening and absorbing agentssuch as octyl salicylate; and optical brighteners, for examplepolystyrylstilbenes, triazinstilbenes, hydroxycoumarins, aminocoumarins,triazoles, pyrazolines, oxazoles, pyrenes, porphyrins, imidazoles, andmixtures thereof.

EXAMPLES

The following examples further describe and demonstrate embodimentswithin the scope of the present invention. The examples are given solelyfor the purpose of illustration and are not to be construed aslimitations of the present invention, as many variations thereof arepossible without departing from the spirit and scope of the invention.Ingredients are identified by chemical or CTFA name, or otherwisedefined below.

The compositions of the present invention are suitable for rinse-offproducts and leave-on products, and are particularly useful for makingproducts in the form of emulsion, cream, gel, spray or, mousse.

Compositions Components Example 1 Example 2 Example 3 Cetyl Alcohol *12.0 2.5 2.0 Stearyl Alcohol *2 3.6 4.5 3.6 Stearamidopropyl 1.6 2.0 1.6Dimethylamine *3 l-Glutamic acid *4 0.512 0.64 0.512 Zinc pyrithione *52.0 2.0 2.0 Benzyl alcohol 0.4 0.4 0.4 Phenoxy Ethanol 0.3 0.3 0.3Methyl Paraben 0.2 0.2 0.2 Propyl Paraben 0.1 0.1 0.1 Silicone Blend *63.36 4.37 3.36 Natural Menthol *19 — — 0.4 Perfume 0.4 0.4 0.43-pyridinecarboxy acid amide 0.05 0.05 0.05 dl-Alpha tocopherol acetate0.05 0.05 0.05 Hydrolyzed collagen *7 0.01 0.01 0.01 Panthenol *8 0.050.05 0.05 Panthenyl Ethyl Ether *9 0.05 0.05 0.05 Octyl methoxycinnamate0.09 0.09 0.09 Benzophenone-3 0.09 0.09 0.09 Citric Acid amountnecessary to adjust pH 3-7 Deionized Water q.s. to 100% ComponentsExample 4 Example 5 Example 6 Cetyl Alcohol *1 2.6 2.0 2.6 StearylAlcohol *2 4.6 3.6 4.6 Stearamidopropyl 1.8 1.6 1.8 Dimethylamine *3l-Glutamic acid *4 0.6 0.5 0.6 Pentaerythritol 1.0 0.5 1.0Tetraisostearate *11 Polypropylene Glycol *18 4.5 4.0 4.5 Zincpyrithione *5 2.0 2.0 2.0 Benzyl alcohol 0.4 0.4 0.4 Phenoxy Ethanol 0.30.3 0.3 Methyl Paraben 0.2 0.2 0.2 Propyl Paraben 0.1 0.1 0.1 NaturalMenthol *19 — — 0.4 Perfume 0.4 0.4 0.4 3-pyridinecarboxy acid amide0.05 0.05 0.05 dl-Alpha tocopherol acetate 0.05 0.05 0.05 Hydrolyzedcollagen *7 0.01 0.01 0.01 Panthenol *8 0.05 0.05 0.05 Panthenyl EthylEther *9 0.05 0.05 0.05 Octyl methoxycinnamate 0.09 0.09 0.09Benzophenone-3 0.09 0.09 0.09 Citric Acid amount necessary to adjust pH3-7 Deionized Water q.s. to 100% Components Example 7 Example 8 Example9 Cetyl Alcohol *1 0.96 1.2 0.96 Stearyl Alcohol *2 0.64 0.8 0.64Stearamidopropyl 1.0 1.0 Dimethylamine *3 Ditallow dimethyl ammonium0.75 0.64 0.75 chloride *10 Pentaerythritol 0.5 0.5 Tetraisostearate *11Pentaerythritol Tetraoleate *12 0.2 Oleyl alcohol *13 0.25Trimethylolpropane 0.25 Triisostearate *14 PEG 2M *15 0.5 0.5 0.5Polysorbate 60 *16 0.25 0.25 0.25 Cetearyl Alcohol *16 0.25 0.25 0.25Glycerylmonostearate *17 0.25 0.25 0.25 Zinc pyrithione *5 2.0 2.0 2.0Benzyl alcohol 0.4 0.4 0.4 Phenoxy Ethanol 0.3 0.3 0.3 Methyl Paraben0.2 0.2 0.2 Propyl Paraben 0.1 0.1 0.1 Natural Menthol *19 — — 0.4Perfume 0.4 0.4 0.4 3-pyridinecarboxy acid amide 0.05 0.05 0.05 dl-Alphatocopherol acetate 0.05 0.05 0.05 Hydrolyzed collagen *7 0.01 0.01 0.01Panthenol *8 0.05 0.05 0.05 Panthenyl Ethyl Ether *9 0.05 0.05 0.05Octyl methoxycinnamate 0.09 0.09 0.09 Benzophenone-3 0.09 0.09 0.09Citric Acid amount necessary to adjust pH 3-7 Deionized Water q.s. to100%Definitions of Components

-   *1 Cetyl Alcohol: Konol series available from Shin Nihon Rika.-   *2 Stearyl Alcohol: Konol series available from Shin Nihon Rika.-   *3 Stearamidopropyl Dimethylamine: SAPDMA available from Inolex.-   *4 l-Glutamic acid: l-Glutamic acid (cosmetic grade) available from    Ajinomoto.-   *5 Zinc pyrithinone: Zinc pyrithione U/2 available from Olin-   *6 Silicone Blend: SE 76 available from General Electric-   *7 Hydrolyzed collagen: Peptein 2000 available from Hormel.-   *8 Panthenol: available from Roche.-   *9 Panthenyl Ethyl Ether: available from Roche.-   *10 Ditallow dimethyl ammonium chloride: Available from Witco    Chemicals.-   *11 Pentaerythritol Tetraisostearate: KAK PTI obtained by Kokyu    alcohol.-   *12 Pentaerythritol Tetraoleate: Available from Shin NihonRika.-   *13 Oleyl alcohol: Available from New Japan Chemical.-   *14 Trimethylolpropane Triisostearate: KAK TTI obtained by Kokyu    alcohol.-   *15 PEG-2M: Polyox obtained by Union Carbide.-   *16 Polysorbate 60, Cetearyl Alcohol: mixture sold as Polawax NF    obtained by Croda Chemicals.-   *17 Glycerylmonostearate: Available from Stepan Chemicals.-   *18 Polypropylene Glycol: PP2000 available from Sanyo Kasei.-   *19 Natural Menthol: Menthol Crystal available from Dr Kolb.    Method of Preparation

The hair conditioning compositions of Examples 1 and 9 as shown abovecan be prepared by any conventional method well known in the art. Theyare suitably made as follows: when included in the composition,polymeric materials such as polypropylene glycol are dispersed in waterat room temperature to make a polymer solution, and heated up to above70° C. Amidoamine and acid, and when present, other cationicsurfactants, ester oil of low melting point oil are added in thesolution with agitation. Then high melting point fatty compound, andwhen present, other low melting point oils and benzyl alcohol are alsoadded in the solution with agitation. The mixture thus obtained iscooled down to below 60° C., and the remaining components such as zincpyrithione, silicone compound, and menthol are added with agitation, andfurther cooled down to about 30° C.

A triblender and/or mill can be used in each step, if necessary todisperse the materials.

Alternatively, up to 50% of the acid can be added after cooling below60° C.

The embodiments disclosed herein have many advantages. For example, theycan provide effective antidandruff efficacy, while not deterioratingconditioning benefits such as wet hair feel, spreadability, andrinsability, as well as providing glossiness, and dry combing.

It is understood that the examples and embodiments described herein arefor illustrative purposes only and that various modifications or changesin light thereof will be suggested to one skilled in the art withoutdeparting from its spirit and scope.

1. A hair conditioning composition comprising by weight: (a) from about0.1% to about 15% of a high melting point fatty compound; (b) from about0.1% to about 10% of an amidoamine having the following general formula:R¹CONH(CH₂)_(m)N(R²)₂  wherein R¹ is a residue of C₁₁ to C₂₄ fattyacids, R² is a C₁ to C₄ allyl, and m is an integer from 1 to 4; (c) anacid selected from the group consisting of l-glutamic acid, lactic acid,hydrochloric acid, malic acid, succinic acid, acetic acid, fumaric acid,l-glutamic acid hydrochloride, tartaric acid, and mixtures thereof, at alevel such that the mole ratio of amidoamine to acid is from about 1:0.3to about 1:1; (d) a safe and effective amount of an antidandruff agent;(e) a preservative system comprising by weight of the entirecomposition, from about 0.1% to about 1.0% of benzyl alcohol, from about0.1% to about 1.0% of phenoxy ethanol, from about 0.05% to about 1.0% ofmethyl paraben, and from about 0.01% to about 1.0% of propyl paraben;and (f) an aqueous carrier; wherein the hair conditioning composition issubstantially free of the group selected from a chelating agent,methylchloroisothiazolinone, and methylisothiazolinone.
 2. The hairconditioning composition according to claim 1 further comprising asilicone compound.
 3. The hair conditioning composition according toclaim 1 further comprising by weight from about 0.1% to about 10% of apolypropylene glycol.
 4. The hair conditioning composition according toclaim 1 comprising by weight: (a) from about 1% to about 10% of the highmelting point fatty compound selected from the group consisting of cetylalcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof; (b)from about 0.5% to about 3% of the amidoamine selected from the groupconsisting of stearamidopropyl dimethylamine, stearamidoethyldiethylamine, and mixtures thereof; (c) l-glutamic acid at a level suchthat the mole ratio of amidoamine to acid is from about 1:0.5 to about1:0.9, and (d) from about 0.3% to about 1% of zinc pyrithione.
 5. Thehair conditioning composition according to claim 1 further comprising byweight from about 0.001% to about 10% of a sensate.
 6. A hairconditioning composition comprising by weight: (a) from about 0.1% toabout 15% of a high melting point fatty compound having a melting pointof 25° C. or higher; (b) from about 0.1% to about 10% of a cationicconditioning agent; c) from about 0.1% to about 10% of a low meltingpoint oil having a melting point of less than 25° C.; (d) a safe andeffective amount of an antidandruff agent; (e) a preservative systemcomprising, by weight of the entire composition, from about 0.1% toabout 1.0% of benzyl alcohol, from about 0.1% to about 1.0% of phenoxyethanol, from about 0.05% to about 1.0% of methyl paraben, and fromabout 0.01% to about 1.0% of propyl paraben; and (f) an aqueous carrier;wherein the hair conditioning composition is substantially free of thegroup selected from a chelating agent, methylchloroisothiazolinone, andmethylisothiazolinone.
 7. The hair conditioning composition according toclaim 6 wherein the low melting point oil is an unsaturated fattyalcohol.
 8. The hair conditioning composition according to claim 7wherein the low melting point oil is selected from the group consistingof: (a) pentaerythritol ester oils having a molecular weight of at leastabout 800, and having the following formula:

 wherein R1, R2, R3, and R4, independently, are branched, straight,saturated, or unsaturated alkyl, aryl, and alkylaryl groups having from1 to about 30 carbons; (b) trimethylol ester oils having a molecularweight of at least about 800, and having the following formula:

 wherein R11 is an alkyl group having from 1 to about 30 carbons, andR12, R13, and R14, independently, are branched, straight, saturated, orunsaturated alkyl, aryl, and alkylaryl groups having from 1 to about 30carbons; (c) poly α-olefin oils derived from 1-alkene monomers havingfrom about 6 to about 16 carbons, the poly α-olefin oils having aviscosity of from about 1 to about 35,000 cst, a molecular weight offrom about 200 to about 60,000, and a polydispersity of no more thanabout 3; (d) citrate ester oils having a molecular weight of at leastabout 500, and having the following formula:

 wherein R21 is OH or CH3COO, and R22, R23, and R24, independently, arebranched, straight, saturated, or unsaturated alkyl, aryl, and alkylarylgroups having from 1 to about 30 carbons; (e) glyceryl ester oils havinga molecular weight of at least about 500, and having the followingformula:

 wherein R41, R42, and R43, independently, are branched, straight,saturated, or unsaturated alkyl, aryl, and alkylaryl groups having from1 to about 30 carbons; and mixtures thereof.
 9. The hair conditioningcomposition according to claim 6 further comprising by weight from about0.1% to about 10% of a polyethylene glycol having the formula:H(OCH2CH2)n-OH wherein n has an average value of from 2,000 to 14,000.10. The hair conditioning composition according to claim 9 furthercomprising by weight from about 0.001% to about 10% of a sensate.